14 Papers
15 Citations
M. Beard is an academic researcher from Joint Institute for Nuclear Astrophysics. The author has contributed to research in topics: Reaction rate & Coulomb barrier. The author has an hindex of 10, co-authored 14 publications.
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Papers
Nuclear fusion in dense matter: Reaction rate and carbon burning
Leandro Gasques,A. V. Afanasjev,E. F. Aguilera,M. Beard,Luiz Carlos Chamon,Peter Ring,Michael Wiescher,D. G. Yakovlev +7 more
TL;DR: In this paper, the Coulomb barrier penetration in dense environments and the astrophysical S factor at low energies were analyzed for all five different nuclear burning regimes in dense matter (two thermonuclear regimes, two pycnonuclear ones, and the intermediate regime).
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Fusion reactions in multicomponent dense matter
TL;DR: In this article, a phenomenological expression for the reaction rate was proposed for the one-component plasma of nuclei, to the multicomponent plasma, and the expression contains several fit parameters which were adjusted to reproduce the best microscopic calculations available in the literature.
Indirect study of the stellar ³⁴ Ar(α,p) ³⁷K reaction rate through ⁴⁰Ca(p,t) ³⁸Ca reaction measurements
A. Long,T. Adachi,M. Beard,G. P. A. Berg,Z. Buthelezi,J. Carter,Manoel Couder,Richard deBoer,R. W. Fearick,S. V. Förtsch,Joachim Görres,J. P. Mira,Sean Murray,R. Neveling,P. Papka,F. D. Smit,Elias Sideras-Haddad,J. A. Swartz,Rashi Talwar,I. T. Usman,Michael Wiescher,J. J. van Zyl,Alexander Volya +22 more
TL;DR: Long et al. as discussed by the authors investigated the stellar Ar(α,p) ³K reaction rate through Ca(p,t) reaction measurements, and showed that the reaction rate is positively correlated with the number of stars in the sky.
Pycnonuclear 12C+12C reaction at zero temperature
TL;DR: In this paper, pycnonuclear reaction calculations for a one-component ionic crystal at zero temperature considering different theoretical approaches have been presented, and the rates depend directly on the determination of the astrophysical S-factor at low energies, which has been obtained through the barrier penetration formalism.
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Experimental measurement of the 12C+16O fusion cross sections at astrophysical energies
X. Fang,Wanpeng Tan,M. Beard,Richard deBoer,G. Gilardy,H. Jung,Q. Liu,Stephanie Lyons,D. Robertson,K. Setoodehnia,C. Seymour,E. Stech,B. Vande Kolk,Michael Wiescher,R. T. de Souza,Sylvie Hudan,Varinderjit Singh,X. Tang,E. Uberseder +18 more
TL;DR: The total cross sections of the 12 C+16 O fusion have been experimentally determined at low energies to investigate the role of this reaction during late stellar evolution burning phases as discussed by the authors, where a high-intensity oxygen beam was produced by the 5MV pelletron accelerator at the University of Notre Dame impinging on a thick ultra-pure graphite target.